Abstract A novel hybrid nanocomposite made of cellulose matrix and pumice volcanic rock as a nature basis is presented. This heterogeneous nanocomposite is has also been applied as a suitable biodegradable catalytic system for facilitating the organic reactions. In this work, firstly we try to perform well characterization on the prepared cellulose/pumice nanocomposite. Further, the catalytic activity of cellulose/pumice nanocomposite is investigated in the synthesis reactions of 1,4-dihydropyridine derivatives. Moreover, the role of ultrasound wave irradiation (using an ultrasound bath with 60 KHz and 150 W L−1) in catalyzing the synthetic reactions is precisely monitored. In summary, great synergistic catalytic effect between cellulose/pumice nanocomposite and ultrasound waves has led to obtain high reaction yields (97%) in short reaction times (10 min), under mild conditions.

中文翻译：

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高效火山基杂化纳米复合材料超声辅助合成1,4-二氢吡啶衍生物

摘要 提出了一种以纤维素基质和浮石火山岩为天然基础的新型杂化纳米复合材料。这种异质纳米复合材料也已被用作合适的可生物降解催化系统，以促进有机反应。在这项工作中，我们首先尝试对制备的纤维素/浮石纳米复合材料进行良好的表征。此外，在1,4-二氢吡啶衍生物的合成反应中研究了纤维素/浮石纳米复合材料的催化活性。此外，超声波辐射（使用 60 KHz 和 150 W L-1 的超声波浴）在催化合成反应中的作用被精确监测。总之，